13results about How to "Avoid excessive impact" patented technology

The present invention discloses a switch-on and switch-off drive mechanism for a high-voltage vacuum circuit breaker, which belongs to the technical field of circuit breakers, and comprises a box body and a vacuum chamber, wherein the vacuum chamber is mounted on the box body, and the vacuum chamber is arranged in multiple groups; a wiring port, wherein the wiring port is fixedly mounted on the side surface of the vacuum chamber, and each group of vacuum chambers is equipped with two groups of wiring ports, and the two groups of wiring ports are arranged up and down; a conductive plate, wherein the conductive plate is mounted inside the wiring port, and one end of the conductive plate extends into the vacuum chamber; and a first conductive column, wherein the upper end of the first conductive column is fixedly connected to a conductive plate of a group at the upper end. The present invention can realize that when closing or opening the switch, the initial speed is fast, and the speed becomes slower in the later stage. When performing the closing and opening operation, the initial speed is fast, and the rapid dynamic change can effectively reduce the generation of arcs, and the later speed becomes slower, which can avoid the problem that the excessive closing and opening speed causes excessive impact on the overall structure of the circuit breaker.

Anchoring system for floating platform (100) that eliminates pitching and rolling movements of the floating platform (100), by means of several anchoring lines (200) attached to the seabed (5), which are supported by several rotary fixing means (2, 3) or pulleys of the floating platform (100) and are all joined together in a common counterweight (1) hanging from the platform (100). Each anchoring line (200) comprises sublines (200d, 200c) (direct, crossover or diagonal), which keep the counterweight (1) always in correspondence with the central axis (300) of the floating platform (100). It also eliminates the pendulum movement of the counterweight (1) and is valid for floating platforms (100) with an odd number of protruding structural arms (12). The system is applicable to any type of floating platform (100), although it is particularly suitable for floating platforms that support offshore wind turbines and marine leisure platforms.

The invention discloses a straw-feeding mechanism assembly of a vertical corn harvester header, which includes at least two straw-feeding mechanisms, both of which are composed of straw-feeding components A and B, wherein the straw-feeding component A contains a straw-feeding chain C, and the straw-feeding component B contains a broken-line chain clamp frame and a straw-feeding chain D, characterized in that the straw-feeding chain D is composed of a front straw-feeding chain and a rear straw-feeding chain respectively arranged on a frame body in front of and behind the bending point of the chain clamp frame, wherein the rear straw-feeding chain is connected to the power sprocket in transmission, and is connected to the front straw-feeding chain and the straw-feeding chain C of another adjacent straw-feeding mechanism through a double-linked variable-speed sprocket with the same gear ratio to achieve a speed reduction transmission connection. After the invention is implemented, compared with the prior art, it has the advantages of good operation quality, high efficiency, and low product manufacturing and use maintenance costs.

The invention relates to the technical field of charging management, in particular to a dynamic load balancing method and system for an alternating current pile for charging a new energy automobile, and the method comprises the steps: triggering a charging request instruction, obtaining charging demand data in response to the charging request instruction, acquiring charging configuration data based on the charging demand data; acquiring a power grid load state in real time, generating a charging regulation and control instruction based on the power grid load state, and acquiring a charging regulation index in response to the charging regulation and control instruction; adjusting the charging configuration data based on the charging adjustment index to obtain adjusted charging configuration data; and charging the electric vehicle based on the adjusted charging configuration data. The method has the effect of improving the charging efficiency and the service quality.

The utility model discloses a railway bridge culvert self -compacting concrete distribution device, by distribution support frame, moving mechanism and distribution system three parts are formed, longitudinal distribution movable frame can move along the support frame longitudinal, transverse distribution movable frame can move on vertical frame transversely, realized the all -round accurate positioning of distribution box in construction area, and the inside of distribution box is equipped with a plurality of independent storage bin, and each bin corresponds to a discharge gate, and is equipped with adjustable opening angle's discharge board, controls the down feeder speed through special blanking component, has solved the difficult problem that self -compacting concrete is easy to separate in long -distance delivery, through multipoint distribution and controllable down feeder speed, ensure that concrete even pours, and the whole set of device is flexible, and easy operation, can accurate positioning distribution point, can also accurate control down feeder speed, especially suitable for railway bridge culvert and other higher engineering application of concrete quality requirement, improves work efficiency while guaranteeing construction quality.

The invention relates to the technical field of mine excavation equipment, in particular to an impact-pressure-resistant self-protection supporting jack which comprises a hydraulic cylinder body, an air pressure buffering module, an ejector rod, a pressure relief module and a ventilation module. The air pressure buffering module is arranged at a bottom port of a telescopic cylinder of the hydraulic cylinder body and located in an inner cavity of an inner cylinder of the hydraulic cylinder body. The ejector rod is inserted into a top port of the telescopic cylinder, the ejector rod is in threaded connection with the telescopic cylinder, and the top end of the ejector rod is detachably assembled with a hinged support of an external hydraulic support and used for supporting the hydraulic support; the pressure relief module is arranged on the ejector rod and is connected with the air pressure buffer module; the ventilation module is arranged on the ejector rod and connected with the air pressure buffering module through a center flow channel of the ejector rod. The pressure relief module is arranged, so that internal air pressure can be relieved when the device is overloaded under stress, internal parts are prevented from being damaged, the maintenance cost of the device is reduced, and the defects existing in the prior art are overcome.

Embodiments of the present disclosure provide a coefficient coding method, an encoder, a decoder, and a computer storage medium. The method includes the following. A bitstream is parsed to obtain a video flag. When the video flag indicates that a video satisfies a preset condition, the bitstream is parsed to obtain a last-significant-coefficient position-reverse flag and coordinate information of a last significant coefficient. When the last-significant-coefficient position-reverse flag indicates that a position of the last significant coefficient is reversed for a current block, the position of the last significant coefficient is determined by calculation with the coordinate information of the last significant coefficient. According to a preset scanning order, all coefficients before the position of the last significant coefficient are decoded to determine coefficients of the current block. As such, the throughput and coding speed of coefficient coding can be improved while improving compression efficiency in the video coding scenarios with high bit depth, high bitrate, high quality, or lossless compression.

The utility model discloses a semi-feeding type rice thresher, and relates to the technical field of agricultural machinery. The semi-feeding type rice threshing machine comprises a machine body, a threshing cylinder and a feeding plate, the feeding plate is assembled on the upper portion of the machine body, a material guiding plate is assembled on the lower portion of the machine body, the threshing cylinder is installed between the feeding plate and the material guiding plate and is designed in a left-right sectional mode, the left section is a primary threshing cylinder, V-shaped arch teeth are distributed on the surface of the primary threshing cylinder, and the right section is a secondary threshing cylinder. And the right section is a secondary threshing cylinder. In order to overcome the defect that threshing is not thorough due to the fact that a threshing machine mostly adopts a single arch tooth structure for threshing, through the design of a left sectional type threshing roller and a right sectional type threshing roller, the V-shaped arch teeth on the left side can be rapidly inserted into the connecting position of rice and rice straw through sharp cutting edges, primary efficient threshing is achieved, residual grains are loosely connected with rice ears after primary threshing, and the threshing effect is good. The U-shaped arch teeth can be attached to rice ears, residual rice is gently and accurately stripped, excessive impact on grains is avoided, threshing cleanliness is improved, grain waste is reduced, and meanwhile straw treatment cost is reduced.

The invention discloses a double-chute structure assembly based on a dry quenching furnace, and belongs to the technical field of dry quenching furnaces, the double-chute structure assembly comprises a chute upper part, a chute lower part and a chute middle bracket section, the chute middle bracket section comprises a plurality of brackets for supporting an annular air duct and a vault cross beam arranged above the brackets and butted with the inner wall of the annular air duct; the bracket inclined arch wall is additionally arranged in the middle of an original single-chute bracket to be changed into double chutes, on one hand, the middle of the bracket is supported by the bracket inclined arch wall left and right, displacement is limited during expansion, the stability of the bracket is improved, and on the other hand, the purpose of uniformizing the smoke flow speed in a chute area is achieved; according to the technical scheme, excessive impact of excessive airflow on the arch crown cross beam and the inner wall of the annular air duct on the inner side of the upper portion of the chute is avoided, coke floating is effectively restrained to a certain degree, in addition, the connecting structure among the lower portion of the chute, the bracket and the bracket inclined arch wall is improved, and the stress condition of the chute is optimized.

The utility model discloses an automobile oil pump body stamping trimming die which comprises a base, the top of the base is connected with the same placing plate through two symmetrically-arranged supporting plates, the placing plate is connected with a top plate through a plurality of sets of hydraulic rods, two die holders are arranged on the top of the placing plate, and a pump body to be machined is placed on the die holders. The die holder is connected with an auxiliary abutting mechanism, multiple sets of cutters are fixedly connected to the bottom of the top plate, the auxiliary abutting mechanism comprises fixing seats fixedly connected to the outer side wall of the die holder, air cylinders are fixedly connected to the tops of the two fixing seats, push rods are fixedly connected to the output ends of the two air cylinders, and abutting plates are fixedly installed at the ends of the push rods. By means of the die holder precisely matched with the size of the pump body and the auxiliary abutting mechanism, high-precision positioning of the pump body can be achieved, position deviation is effectively avoided, and therefore the trimming precision is guaranteed, the quality and the qualified rate of products are greatly improved, the defective rate is reduced, and reliable quality guarantee is provided for production of automobile oil pumps.

The invention discloses an opening and closing driving mechanism of a high-voltage vacuum circuit breaker, and belongs to the technical field of circuit breakers, the opening and closing driving mechanism comprises a box body and vacuum chambers, the vacuum chambers are installed on the box body, and the vacuum chambers are arranged in multiple groups; the wiring ports are fixedly mounted on the side surfaces of the vacuum chambers, two groups of wiring ports are mounted on each group of vacuum chambers, and the two groups of wiring ports are arranged up and down; the current-conducting plate is mounted in the wiring port, and one end of the current-conducting plate extends into the vacuum chamber; and the upper end of the first conductive column is fixedly connected with the group of conductive plates at the upper end. According to the invention, during switching-on or switching-off, the initial speed is fast, the speed is slowed down in the later period, the initial speed is fast and fast dynamic change during switching-on and switching-off operation, generation of electric arcs can be effectively reduced, the speed is slowed down in the later period, and the problem that too fast switching-on and switching-off speed causes too large impact on the whole structure of the circuit breaker can be avoided.

The invention discloses a double-inclined channel structure assembly in a dry coke quenching oven, belonging to the technical field of dry coke quenching ovens, comprising an upper inclined channel, a lower inclined channel and a corbel section in the middle of the inclined channel, wherein the corbel section in the middle of the inclined channel comprises a plurality of corbels supporting an annular air duct and a vault crossbeam arranged above the corbels and connected to the inner wall of the annular air duct; the invention changes the original single inclined channel into a double inclined channel by adding a corbel oblique arch wall in the middle of the corbel, on the one hand, the middle part of the corbel is supported by the left and right sides of the corbel oblique arch wall, so that the displacement is limited when the corbel is expanded, thereby increasing the stability of the corbel; on the other hand, the double air duct serves the purpose of uniformizing the flow rate of smoke and dust in the inclined channel area, avoiding excessive impact of excessive airflow on the vault crossbeam and the inner wall of the annular air duct on the inner side of the upper part of the inclined channel, and effectively suppressing the floating of coke to a certain extent; in addition, the connection structure between the lower part of the inclined channel, the corbels and the corbel oblique arch wall is improved, and the stress condition of the inclined channel is optimized.

This utility model discloses a double-sided cable trench trolley, belonging to the technical field of cable trench trolleys. This double-sided cable trench trolley includes a main body, a moving mechanism, and a steering mechanism. The main body includes a cable trench trolley body, with a pair of movable slots at both ends. A sliding sleeve is installed at the bottom of each movable slot, and a moving block is slidably installed inside each sliding sleeve. The steering mechanism includes four steering boxes, the upper ends of which are rotatably fitted onto the bottom ends of the moving blocks. A steering wheel is rotatably connected to the bottom end of each steering box. The moving mechanism includes a pair of moving boxes, respectively located on both sides of the bottom end of the cable trench trolley body. Several driven wheels are rotatably connected to one side of the moving box, and a drive wheel is rotatably connected to the other side. This utility model effectively improves the practicality of the double-sided cable trench trolley and has high practical value.